| |
|
 |
|
 |
|
|
|
| |
|
|
xen-devel
Re: [Xen-devel] CPU Utilization
Dave Thompson (davetho) wrote:
-----Original Message-----
From: Anthony Liguori [mailto:aliguori@xxxxxxxxxx]
Sent: Monday, December 12, 2005 5:01 PM
To: Dave Thompson (davetho)
Cc: Rob Gardner; xen-devel@xxxxxxxxxxxxxxxxxxx
Subject: Re: [Xen-devel] CPU Utilization
top isn't smart enough to realize that for a portion of the running
time, a domain has been pre-empted out and is not running.
top will then charge whatever was running at pre-emption time for the
time that other domain running.
But what else is running? In this case I only have dom0 configured,
there is no domU. The only other possibility would be the hypervisor
and I hope the hypervisor is not accounting for the other 30%.
If xend is started, you may have the software bridge running which can
use as much as 10% cpu. Also, I don't see soft ints in that top output.
That could also be another ~7% cpu. Also xen is doing some work,
receiving the real interrupts and generating virtual interrupts to dom0,
so with all this, it is possible that you are using another 30% unseen
in top. Best way to confirm this would be to use xenoprofile.
-Andrew
_______________________________________________
Xen-devel mailing list
Xen-devel@xxxxxxxxxxxxxxxxxxx
http://lists.xensource.com/xen-devel
|
|
|
| |
|
Home